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Gapped solitons and periodic excitations in strongly coupled BEC

Utpal Roy·B. Shah·Kumar Abhinav·P. K. Panigrahi
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Abstract

It is found that localized solitons in the strongly coupled cigar shaped Bose-Einstein condensate form two distinct classes. The one without a background is an asymptotically vanishing, localized soliton, having a wave-number, which has a lower bound in magnitude. Periodic soliton trains exist only in the presence of a background, where the localized soliton has a \textit{W}-type density profile. This soliton is well suited for trapping of neutral atoms and is found to be stable under Vakhitov-Kolokolov criterion, as well as numerical evolution. We identify an insulating phase of this system in the presence of an optical lattice. It is demonstrated that the ${\it W}$-type density profile can be precisely controlled through trap dynamics.

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Utpal Roy, B. Shah, Kumar Abhinav, P. K. Panigrahi. 2010-04-07. Gapped solitons and periodic excitations in strongly coupled BEC. https://doi.org/10.1088/0953-4075%2F44%2F3%2F035302

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